1 Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences , Urumqi 830011, China.
2 The Graduate School of Chinese Academy of Science , Beijing 100049, China.
3 Vaporsens Inc. , Salt Lake City, Utah 84112, United States.
4 Nano Institute of Utah and Department of Materials Science and Engineering, University of Utah , Salt Lake City, Utah 84112, United States.